• 한국화재소방학회:학술대회논문집
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• 한국화재소방학회 2008년도 추계학술논문발표회 논문집
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• pp.310-315
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• 2008

The objective of design for a post flash-over fire is contain the fire and prevent structural collapse, as necessary to meet the performance requirements. In the post flash-over phase of a fire all of the combustible objects in the compartment are burning and the heat release rate is limited either by the fuel surface area or the available air supply. So for the PBD situations, the process of evaluation method for fire phenomena is very important. It is the aim of this study to investigate and analyze the evaluation method of structural fire resistance in Japan.

• 대한기계학회논문집B
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• 제27권3호
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• pp.367-373
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• 2003

The present study investigates the fire suppression characteristics using a water mist fire suppression system. The fire extinguishing times are measured for various fire sources, fuel types, and different total flooding rates of water mist. Pool fire with hydrocabon fuel is successfully extinguished within a minute under the operating conditions of the water mist system. Two different regimes of the smoke layer cooling are observed, such as rapid and slow cooling processes. The regimes are divided by threshold time which is calculated with auto-correlation function. The threshold time for the initial cooling decreases with increasing water flow-rates and fire sources. These initial cooling effects play an important role in preventing the occurance of flashover fire by the initial fire suppression.

• 한국화재소방학회:학술대회논문집
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• 한국화재소방학회 1996년도 학술발표회
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• pp.30-33
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• 1996

This paper presents the technical basis for hot smoke test intended to investigate the effectiveness of smoke ventilation system in both high-rise building and those containing atria and/or galleria. Smoke is particularly serious hazard in these building in which considerable time is required for complete evacuation. It is widely recognised that the effectiveness of large smoke ventilation system can be difficult to confirm by a critical analysis of the system design calculation. Thus a hot smoke test is recently introduced through the experiences of many attempts. Diffusion flames used for hot smoke test have a higher flame length, so that those can not be applied to small compartment. Therefore the objective of this paper is introducing the method of flame control which can be applied to any size of compartment

• 한국안전학회지
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• 제23권1호
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• pp.24-27
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• 2008

The recent fire incident in an elementary school of Chonan city causes the media focus on the fire safety of residential container buildings. In this study, real fire tests were conducted in this kind of buildings. Fire temperature and radiant heat flux were measured, in order to investigate the hazard-reduction effects during the fire emergency of residential container buildings. According to the test results, flash over occur in 10 minutes, peak fire temperature was $935.5^{\circ}C$, peak radiant heat flux was $24.99kW/m^2$ at 8minutes after residential container building fire.

• 설비공학논문집
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• 제15권4호
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• pp.261-267
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• 2003

The present study investigates the fire suppression characteristics using a water mist fire suppression system. Numerical simulations of fire suppression with water mist are performed with considering the interaction of fire plume and water droplet, droplet evaporation, and combustion of pool fire. The predicted temperature fields of smoke layer are compared with that of measured data. Numerical results agree with the experimental results within 5$^{\circ}C$ in the case without water mist In the case of fire suppression with water mist, numerical results dose not predict well lot temperature field in the gradual cooling region after water mist injection. But the predicted results of initial fire suppression are in good agreement with that of measured data. The reason of the discrepancy between predicted and measured data is due to the variation of turning rate during the injection of water mist. The effect of burning rate on the fire suppression is left as future study.

• 공업화학
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• 제35권3호
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• pp.239-247
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• 2024

해군 함정에서 화재가 발생하면 잠재적인 인적, 물적 손실을 완화하기 위해 신속한 진압과 통제가 필수적이다. 해군 함정의 특성상 유류화재 발생 가능성이 크며 이에 유류화재 대응에 탁월한 수성막포(AFFF)를 사용하는 것이 화재 진압에 매우 중요하다. 또한 함정의 격실 내에서 화재가 발생하는 상황 역시 고려해야 한다. 이러한 상황에서 수성막포의 궤적과 적용 범위를 이해하는 것이 중요하므로 격실 환경에 맞는 소화 시스템 설계가 반드시 필요하다. 본 연구에서는 수성막포에 대한 전산유체역학 (CFD) 방법론을 검증하기 위한 해석으로 분사 높이 및 각도에 대한 적용 가능성을 조사하였다. 이러한 내용을 바탕으로 하여 함정 격실에 적용가능한 CFD 해석 결과를 얻었다. 이 결과는 해군 함정 격실 내 유류 화재에 신속하게 대응할 수 있는 소화 시스템 개발의 기반이 될 것이다.

• 한국화재소방학회:학술대회논문집
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• 한국화재소방학회 2003년도 추계학술논문발표회논문집
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• pp.93-98
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• 2003

• International Journal of Air-Conditioning and Refrigeration
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• 제12권1호
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• pp.30-36
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• 2004

The present study investigates the fire suppression characteristics using a water mist fire suppression system. Numerical simulations of fire suppression with water mist are performed with considering the interaction of fire plume and water spray. The predicted temperature fields of smoke layer are compared with those of measured data. Numerical results agree with the experimental results within $10^{\circ}C$ in the case without water mist. In the case of fire suppression with water mist, numerical results do not predict well for temperature field in the gradual cooling region after water mist injection. But the predicted results of initial fire suppression are in good agreement with those of measured data. The reason for the discrepancy between predicted and measured data is due to the poor combustion modeling during the injection of water mist. More elaborate models for numerical simulation are required for better predictions of the fire suppression characteristics using water mist.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2013년도 추계 학술논문 발표대회
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• pp.110-111
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• 2013

This research studies in the field of domestic fires are an issue in many scientific fire research as a research method to validate the domestic environment and ISO-9705 housing on the basis of experiments in virtual space by making a single fire compartment space for conducting experiments and Appearance of a fire occurring within each flammable Heat Release Rate analysis was carried out mainly. Placed within the space of one flammable HRR calculated as the sum of the number of single-room fire experiments conducted and the results compared with the value in comparing the conduct of fire locations and fire load within the building area of the future, the HRR value represents the change in domestic a consideration of the safety of the building is to propose matters.

• 한국해양공학회지
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• 제33권4호
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• pp.340-349
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• 2019

In the case of a fire accident on a ship or an offshore plant, the design of the bulkhead penetration piece must be verified via a fire test procedure (FTP), as specified by the Maritime Safety Committee (MSC). The purpose of this study is to verify both the numerical analysis results and the design specifications for penetration pieces that could be applied to the A60 class bulkhead division. In this study, the FTP was carried out in accordance with the test procedure prescribed in the MSC regulation. In order to review the fire resistance performance according to the material type, bulkhead penetration pieces for the FTP were made from brass, carbon steel for machine structures (S45C), and austenite stainless steel (SUS316). In addition, spray-type insulation and mechanical fastener-type insulation were applied to investigate the fire resistance performance according to the type of insulation. To verify the heat transfer numerical analysis results for the A60 class bulkhead penetrating piece from this test study, the design specifications of the penetrating piece material and the insulation type applicable to a ship and an offshore plant were identified.